Knock: Unlock your Mac by knocking on your iPhone

Knock Software looks to give busy Mac and iPhone users a way to quickly and securely unlock their Macs without constantly typing in their password. Its Knock app has been released on iOS this week, allowing users to simply knock on their iPhone’s screen to unlock their Macs via Bluetooth.

Knock Software promises Knock won’t drain an iPhone’s battery, as it connects to the Mac via Bluetooth Low Energy, which draws little power.